Abstract
A single layer Prussian blue (PB) grid was constructed on a Pt substrate using a self-assembly approach with nanosphere lithography in order to create a matrix for the uniform and ordered immobilization of proteins. Enzymes were captured in the cavities of the PB grid with the aid of an alkoxy silane linker, which enabled strong interaction between the silane's alkoxy groups and Pt. Using a low applied potential of −0.1 V vs. Ag/AgCl the as-prepared biosensors exhibited excellent performance in the detection of glucose, lactate and glutamate, indicating the versatile application of this specific PB architecture in the area of biosensors.
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